MESON Chess Problem Database

Problem Display
PID: 189673 (3B4/8/NR1qn3/k7/r7/p1pB4/8/K7 w - - 0 1)

Kadera, Vojtech

Narodni Politika, 1912

3B4/8/NR1qn3/k7/r7/p1pB4/8/K7

#2

5 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Rxd6#
    • 1...Sf4
      • 2.Rxd6#
    • 1...Sc5
      • 2.Rxd6#
    • 1...Sg5
      • 2.Rxd6#
    • 1...Sg7
      • 2.Rxd6#
    • 1...Sf8
      • 2.Rxd6#
  • Tries
    • 1.Rxd6+?
      • 1...Sc7
        • 2.Bxc7#
      • 1...Sxd8!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Rb5#
      • 1...Qxb4
        • 2.Ra6#
      • 1...Qxd3
        • 2.Sc6#
      • 1...Qxb6
        • 2.Sc6#
      • 1...Rxb4
        • 2.Ra6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • S(f);N_GUARD::B(E)+R(D),XQ(e)
  • Tries
    • Try
      • R(D);CHECK,XQ(e)
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::B(E),XS(f)
      • Refutation
        • S(f);XB(E)
  • Actual
    • S(C);
    • Threat
      • B(E)+R(D),DCHECK
    • Vars
      • Q(e);SBLOCK,XS(C)::B(E)+R(D),DCHECK
      • Q(e);N_GUARD,XB(B)::S(C)
      • Q(e);N_GUARD,P_SPINQ(e),XR(D)::S(C)
      • R(c);SBLOCK,XS(C)::B(E)+R(D),DCHECK
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